Data Item _struct_conf_type.id
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General 
- Item name
- _struct_conf_type.id
- Category name
- struct_conf_type
- Attribute name
- id
- Required in PDB entries
- yes
- Used in current PDB entries
- Yes, in about 95.4 % of entries
Item Description
The descriptor that categorizes the type of the conformation
of the backbone of the polymer (whether protein or nucleic acid).
Explicit values for the torsion angles that define each
conformation are not given here, but it is expected that the
author would provide such information in either the
_struct_conf_type.criteria or _struct_conf_type.reference data
items, or both.
Data Type 
- Data type code
- ucode
- Data type detail
- code item types/single words (case insensitive) ...
- Primitive data type code
- uchar
- Regular expression
- [][_,.;:"&<>()/\{}'`~!@#$%A-Za-z0-9*|+-]*
Controlled Vocabulary
| Allowed Value | Details |
|---|---|
| BEND | region with high backbone curvature without specific hydrogen bonding, a bend at residue i occurs when the angle between C$\_alpha(i)-C_\alpha(i-2) and C_\alpha(i+2) - C_\alpha(i)$ is greater than 70 degrees (protein) |
| HELX_LH_27_P | left-handed 2-7 helix (protein) |
| HELX_LH_3T_P | left-handed 3-10 helix (protein) |
| HELX_LH_AL_P | left-handed alpha helix (protein) |
| HELX_LH_A_N | left-handed A helix (nucleic acid) |
| HELX_LH_B_N | left-handed B helix (nucleic acid) |
| HELX_LH_GA_P | left-handed gamma helix (protein) |
| HELX_LH_N | left-handed helix with type not specified (nucleic acid) |
| HELX_LH_OM_P | left-handed omega helix (protein) |
| HELX_LH_OT_N | left-handed helix with type that does not conform to an accepted category (nucleic acid) |
| HELX_LH_OT_P | left-handed helix with type that does not conform to an accepted category (protein) |
| HELX_LH_P | left-handed helix with type not specified (protein) |
| HELX_LH_PI_P | left-handed pi helix (protein) |
| HELX_LH_PP_P | left-handed polyproline helix (protein) |
| HELX_LH_Z_N | left-handed Z helix (nucleic acid) |
| HELX_N | helix with handedness and type not specified (nucleic acid) |
| HELX_OT_N | helix with handedness and type that do not conform to an accepted category (nucleic acid) |
| HELX_OT_P | helix with handedness and type that do not conform to an accepted category (protein) |
| HELX_P | helix with handedness and type not specified (protein) |
| HELX_RH_27_P | right-handed 2-7 helix (protein) |
| HELX_RH_3T_P | right-handed 3-10 helix (protein) |
| HELX_RH_AL_P | right-handed alpha helix (protein) |
| HELX_RH_A_N | right-handed A helix (nucleic acid) |
| HELX_RH_B_N | right-handed B helix (nucleic acid) |
| HELX_RH_GA_P | right-handed gamma helix (protein) |
| HELX_RH_N | right-handed helix with type not specified (nucleic acid) |
| HELX_RH_OM_P | right-handed omega helix (protein) |
| HELX_RH_OT_N | right-handed helix with type that does not conform to an accepted category (nucleic acid) |
| HELX_RH_OT_P | right-handed helix with type that does not conform to an accepted category (protein) |
| HELX_RH_P | right-handed helix with type not specified (protein) |
| HELX_RH_PI_P | right-handed pi helix (protein) |
| HELX_RH_PP_P | right-handed polyproline helix (protein) |
| HELX_RH_Z_N | right-handed Z helix (nucleic acid) |
| OTHER | secondary structure type that does not conform to an accepted category, random coil (protein) |
| STRN | beta strand (protein) |
| TURN_OT_P | turn with type that does not conform to an accepted category (protein) |
| TURN_P | turn with type not specified (protein) |
| TURN_TY1P_P | type I prime turn (protein) |
| TURN_TY1_P | type I turn (protein) |
| TURN_TY2P_P | type II prime turn (protein) |
| TURN_TY2_P | type II turn (protein) |
| TURN_TY3P_P | type III prime turn (protein) |
| TURN_TY3_P | type III turn (protein) |
Controlled Vocabulary at Deposition
| Allowed Value | Details |
|---|---|
| BEND | region with high backbone curvature without specific hydrogen bonding, a bend at residue i occurs when the angle between C$\_alpha(i)-C_\alpha(i-2) and C_\alpha(i+2) - C_\alpha(i)$ is greater than 70 degrees (protein) |
| HELX_LH_27_P | left-handed 2-7 helix (protein) |
| HELX_LH_3T_P | left-handed 3-10 helix (protein) |
| HELX_LH_AL_P | left-handed alpha helix (protein) |
| HELX_LH_A_N | left-handed A helix (nucleic acid) |
| HELX_LH_B_N | left-handed B helix (nucleic acid) |
| HELX_LH_GA_P | left-handed gamma helix (protein) |
| HELX_LH_N | left-handed helix with type not specified (nucleic acid) |
| HELX_LH_OM_P | left-handed omega helix (protein) |
| HELX_LH_OT_N | left-handed helix with type that does not conform to an accepted category (nucleic acid) |
| HELX_LH_OT_P | left-handed helix with type that does not conform to an accepted category (protein) |
| HELX_LH_P | left-handed helix with type not specified (protein) |
| HELX_LH_PI_P | left-handed pi helix (protein) |
| HELX_LH_PP_P | left-handed polyproline helix (protein) |
| HELX_LH_Z_N | left-handed Z helix (nucleic acid) |
| HELX_N | helix with handedness and type not specified (nucleic acid) |
| HELX_OT_N | helix with handedness and type that do not conform to an accepted category (nucleic acid) |
| HELX_OT_P | helix with handedness and type that do not conform to an accepted category (protein) |
| HELX_P | helix with handedness and type not specified (protein) |
| HELX_RH_27_P | right-handed 2-7 helix (protein) |
| HELX_RH_3T_P | right-handed 3-10 helix (protein) |
| HELX_RH_AL_P | right-handed alpha helix (protein) |
| HELX_RH_A_N | right-handed A helix (nucleic acid) |
| HELX_RH_B_N | right-handed B helix (nucleic acid) |
| HELX_RH_GA_P | right-handed gamma helix (protein) |
| HELX_RH_N | right-handed helix with type not specified (nucleic acid) |
| HELX_RH_OM_P | right-handed omega helix (protein) |
| HELX_RH_OT_N | right-handed helix with type that does not conform to an accepted category (nucleic acid) |
| HELX_RH_OT_P | right-handed helix with type that does not conform to an accepted category (protein) |
| HELX_RH_P | right-handed helix with type not specified (protein) |
| HELX_RH_PI_P | right-handed pi helix (protein) |
| HELX_RH_PP_P | right-handed polyproline helix (protein) |
| HELX_RH_Z_N | right-handed Z helix (nucleic acid) |
| OTHER | secondary structure type that does not conform to an accepted category, random coil (protein) |
| STRN | beta strand (protein) |
| TURN_OT_P | turn with type that does not conform to an accepted category (protein) |
| TURN_P | turn with type not specified (protein) |
| TURN_TY1P_P | type I prime turn (protein) |
| TURN_TY1_P | type I turn (protein) |
| TURN_TY2P_P | type II prime turn (protein) |
| TURN_TY2_P | type II turn (protein) |
| TURN_TY3P_P | type III prime turn (protein) |
| TURN_TY3_P | type III turn (protein) |
